Answer:
70
Step-by-step explanation:
 
        
             
        
        
        
2 _ _ _ 3 _ _ _ 4 _ _ _                      add one 
_ 11 _ _ _ 14 _ _ _ 17 _ _                add three
_ _ 38 _ _ _ 47 _ _ _ 56 _                add nine
_ _ _ 119 _ _ _ 146 _ _ _173           add seventeen 
Hope this helps!!!
        
             
        
        
        
Answer:
 67.5
Step-by-step explanation:
I've learned this multiple ways but in my opinion this is the easiest. Just times everything together so, 40 x 2.5 x 1.2 which equals 135 and then divide 135 by 2 which equals your answer of 67.5 which is rounded to the nearestt tenth already.
 
        
             
        
        
        
If M <span>is the midpoint of AB then AB = 2AM
8x - 6 = 2(3x + 3)
8x - 6 = 6x + 6
8x - 6x = 6 + 6
2x = 12
x = 12/2
x = 6
AM = 3x + 3 = 3*6 + 3 = 18 + 3 = 21 units
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3x-4= 6x-19 » -4+19 = 6x-3x » 15 = 3x » 15/3 = x » x = 5